Enhance your assembly process with these Sems Machine Screws. Designed for efficiency and convenience, these screws feature a Phillips drive type and external tooth washer for secure fastening. Constructed from durable steel with a zinc finish coating, they ensure longevity and corrosion resistance. Meeting ASME B18.13 specifications, these 4-40 thread size screws are perfect for a wide range of applications. With a pan head design and a length of .5625 inches, they offer versatility in use. Rest assured, these screws are also RoHS compliant, making them a sustainable choice for your projects. Elevate your hardware solutions with these high-quality Sems Machine Screws.